Yes, you should be able to hear the pump motor running if you have the engine off and just the ignition turned on. Just keep the door open and listen with the hood up, they are fairly noisy, make a bit of a whirring sound. It is very audible. Also, find the pump on the side of the canister and make sure it is still hooked up electrically and then trace the fluid hose all the way to the hood to look for discrepencies.